Doesn't matter. Isn't Eberbach a total bishounen as far as seinen shows go? He's also at least an average special forces soldier if not a better one (meaning he's much better a soldier than any regular forces dudes). He hasn't done many mistakes or needed too much saving during the operations we have seen, despite grumbling all the time when others act unprofessionally or witlessly. He's also an independent thinker and hates stasi like any man with at least half a brain should. So, all things considered, wouldn't Irisdina be strange if she didn't drop her panties for him, given a chance?